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Pau Espin Pedrol gerrit-no-reply at lists.osmocom.orgPau Espin Pedrol has posted comments on this change. ( https://gerrit.osmocom.org/12008 ) Change subject: lms: Use a default Tx gain value of 64 dB. ...................................................................... Patch Set 2: It seems default (having no "tx-attenuation" line in osmo-bts VTY) ends up setting TxGain to 73Db with this patch applied: -- Transceiver active with 1 channel(s) Thu Nov 29 14:09:49 2018 DMAIN <0000> Transceiver.cpp:724 [tid=139633425098496] command is POWEROFF Thu Nov 29 14:09:49 2018 DMAIN <0000> Transceiver.cpp:724 [tid=139633425098496] command is RXTUNE 1782200 Thu Nov 29 14:09:50 2018 DMAIN <0000> Transceiver.cpp:724 [tid=139633425098496] command is TXTUNE 1877200 Thu Nov 29 14:09:50 2018 DMAIN <0000> Transceiver.cpp:724 [tid=139633425098496] command is SETTSC 7 Thu Nov 29 14:09:50 2018 DMAIN <0000> Transceiver.cpp:826 [tid=139633425098496] Changing TSC from 0 to 7 Thu Nov 29 14:09:50 2018 DMAIN <0000> Transceiver.cpp:724 [tid=139633425098496] command is POWERON Thu Nov 29 14:09:50 2018 DMAIN <0000> Transceiver.cpp:253 [tid=139633425098496] Starting the transceiver Thu Nov 29 14:09:50 2018 DMAIN <0000> radioInterface.cpp:169 [tid=139633425098496] Starting radio device Thu Nov 29 14:09:50 2018 DDEV <0001> LMSDevice.cpp:212 [tid=139633425098496] starting LMS... Thu Nov 29 14:09:50 2018 DDEV <0001> LMSDevice.cpp:316 [tid=139633425098496] Setting TX gain to 64 dB. Thu Nov 29 14:09:50 2018 DDEV <0001> LMSDevice.cpp:336 [tid=139633425098496] Setting RX gain to 36.5 dB. Thu Nov 29 14:09:50 2018 DDEV <0001> LMSDevice.cpp:383 [tid=139633425098496] Initial timestamp 27500 Thu Nov 29 14:09:50 2018 DMAIN <0000> radioInterface.cpp:190 [tid=139633425098496] Radio started Thu Nov 29 14:09:50 2018 DMAIN <0000> Threads.cpp:116 [tid=139633422538496] Thread 139633422538496 (task 1885) set name: TxLower Thu Nov 29 14:09:50 2018 DMAIN <0000> Threads.cpp:116 [tid=139633422444288] Thread 139633422444288 (task 1886) set name: RxLower Thu Nov 29 14:09:50 2018 DMAIN <0000> Threads.cpp:116 [tid=139633422284544] Thread 139633422284544 (task 1887) set name: RxUpper0 Thu Nov 29 14:09:50 2018 DMAIN <0000> Threads.cpp:116 [tid=139633422157568] Thread 139633422157568 (task 1888) set name: TxUpper0 Thu Nov 29 14:09:50 2018 DMAIN <0000> Transceiver.cpp:724 [tid=139633425098496] command is SETRXGAIN 1 Thu Nov 29 14:09:50 2018 DDEV <0001> LMSDevice.cpp:336 [tid=139633425098496] Setting RX gain to 1 dB. Thu Nov 29 14:09:50 2018 DMAIN <0000> Transceiver.cpp:724 [tid=139633425098496] command is SETPOWER 0 Thu Nov 29 14:09:50 2018 DDEV <0001> LMSDevice.cpp:316 [tid=139633425098496] Setting TX gain to 73 dB. So basically SETPOWER 0 means apply 0 attenuation, which gets passed this way: rfGain = mRadio->setTxGain(mRadio->maxTxGain() - (double) atten, chan); So I think we should set maxTxGain() to 64dB instead of 73dB for it to be applied nicely. -- To view, visit https://gerrit.osmocom.org/12008 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: osmo-trx Gerrit-Branch: master Gerrit-MessageType: comment Gerrit-Change-Id: Id018b27b1d8a2f48d60b29e688583c9a5ac49a81 Gerrit-Change-Number: 12008 Gerrit-PatchSet: 2 Gerrit-Owner: Harald Welte <laforge at gnumonks.org> Gerrit-Reviewer: Jenkins Builder (1000002) Gerrit-Reviewer: Pau Espin Pedrol <pespin at sysmocom.de> Gerrit-Comment-Date: Thu, 29 Nov 2018 13:18:05 +0000 Gerrit-HasComments: No Gerrit-HasLabels: No -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.osmocom.org/pipermail/gerrit-log/attachments/20181129/ff055643/attachment.htm>